NJ 2208 40x80x23 Bearing
Single Row Cylindrical Roller Bearing
The NJ 2208 Single Row Cylindrical Roller Bearing is a highly versatile and widely used bearing type, designed to handle radial loads and moderate thrust loads in both directions. It belongs to the family of cylindrical roller bearings, which are known for their exceptional load-carrying capacity, durability, and precision in a wide range of industrial applications. The bearing’s structure consists of an outer ring, an inner ring, and a cylindrical roller element, which allows it to efficiently handle heavy radial loads while minimizing friction and heat generation during operation.
Performance Overview of the NJ 2208 Bearings
| Category | Detail/Specification |
|---|---|
| Brand | AMIGO NJ 2208| Interchangeable With: SKF NJ 2208 |
| Bore diameter | 40 mm |
| Outside diameter | 80 mm |
| Width | 23 mm |
| Basic dynamic load rating | 81.5 kN |
| Basic static load rating | 75 kN |
| Reference speed | 9,500 r/min |
| Limiting speed | 11,000 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In one direction |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 1 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Dimensions(mm) | 40x80x23 |
| Category | Detail/Specification |
|---|---|
| Brand | AMIGO NJ 2208| Interchangeable With: SKF NJ 2208 |
| Bore diameter | 1.575 in |
| Outside diameter | 3.15 in |
| Width | 0.906 in |
| Basic dynamic load rating | 18,322 lbf |
| Basic static load rating | 16,861 lbf |
| Reference speed | 9,500 r/min |
| Limiting speed | 11,000 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In one direction |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 1 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Dimensions(mm) | 40x80x23 |
Specifications Overview of the NJ 2208 Bearings
| Details | Specifications |
|---|---|
| Bore diameter | 40 mm |
| Outside diameter | 80 mm |
| Width | 23 mm |
| Raceway diameter of inner ring | 49.5 mm |
| Chamfer dimension (r?,?) | min. 1.1 mm |
| Chamfer dimension (r?,?) | min. 1.1 mm |
| Permissible axial displacement | max. 1.9 mm |
| Details | Specifications |
|---|---|
| Bore diameter | 1.575 in |
| Outside diameter | 3.15 in |
| Width | 0.906 in |
| Raceway diameter of inner ring | 1.949 in |
| Chamfer dimension (r?,?) | min. 0.043 in |
| Chamfer dimension (r?,?) | min. 0.043 in |
| Permissible axial displacement | max. 0.075 in |
Applicable Machines and Industries
The NJ 2208 Single Row Cylindrical Roller Bearing is a versatile bearing type, commonly used in various machines due to its ability to handle heavy radial loads and moderate axial loads. Here’s an overview of machines where it is suitable, the role it plays in these machines, and some brands or series of replaceable bearings:
Machines Suitable for NJ 2208 Bearing:
Gearboxes:
- Role: The bearing helps in supporting the rotating shafts and gears, ensuring smooth transmission of power and handling the heavy radial forces generated in the gearbox. It also allows for some axial displacement, which is beneficial in high-speed applications.
Electric Motors:
- Role: In electric motors, the NJ 2208 bearing supports the motor shaft, ensuring minimal friction during rotation and withstanding both radial loads and vibrations produced during motor operation.
Pumps (Centrifugal and Hydraulic):
- Role: The bearing plays a critical role in maintaining the pump’s performance by supporting the rotating impellers and shafts, reducing wear and tear, and ensuring the pump can handle high radial loads.
Compressors:
- Role: NJ 2208 bearings help compressors operate efficiently by providing support to rotating shafts and reducing friction. They withstand the heavy radial loads generated during compression cycles.
Machine Tool Spindles:
- Role: These bearings are vital for supporting spindle shafts in machine tools. They ensure precision and smooth rotation under high radial loads, enhancing the machine’s overall accuracy and performance.
Conveyors:
- Role: NJ 2208 bearings are used in conveyor systems to support the rollers, reducing resistance and ensuring the smooth transfer of materials across the conveyor’s length, while withstanding heavy radial loads.
Brands or Series of Replaceable Bearings:
The NJ 2208 bearing can be replaced by equivalent bearings from various reputable brands. Here’s a list of replaceable bearings from well-known manufacturers:
SKF NJ 2208 ECP
- Known for its reliability, SKF bearings offer high-quality performance in heavy-load applications, including electric motors, gearboxes, and conveyors.
FAG NJ2208-E-TVP2
- FAG offers a precision-engineered equivalent bearing, suitable for gearboxes and other industrial machinery, designed to handle both radial and axial loads effectively.
NSK NJ 2208
- NSK’s cylindrical roller bearings provide durability and are ideal for machine tools, electric motors, and pumps, known for their low noise and vibration levels.
NTN NJ 2208
- NTN bearings are suitable for high-speed applications like compressors and electric motors, providing excellent performance in demanding environments.
Timken NJ2208EMA
- Timken is known for producing robust bearings, and this model is ideal for high-performance industrial applications like pumps and gearboxes, with high load-bearing capacity.
Koyo NJ2208
- Koyo’s cylindrical roller bearings are widely used in machinery that requires high precision and durability, such as conveyors and machine tool spindles.
NJ 2208 Bearing Cross Reference and Interchange
| Brand | Equivalent Model |
|---|---|
| Amigo | NJ 2208 |
| SKF | NJ 2208 ECP |
| FAG | NJ 2208-E-XL-TVP2 |
| KOYO | NJ 2208 R |
| NTN | NJ 2208 E |
| NSK | NJ 2208 EM |
The NJ 2208 Single Row Cylindrical Roller Bearing is commonly used in various industrial applications and is compatible with several equivalent models from different manufacturers.
Choosing the Right Bearing
By examining the specifications, features, and advantages of each bearing, users can make informed purchasing decisions.
When to Choose NJ 2208 Bearings
High Radial Load Applications: NJ 2208 bearings are optimal for applications where radial loads are the primary concern, such as in gearboxes, electric motors, and conveyors. They handle heavy radial loads efficiently while allowing for axial displacement in one direction, which can be important in high-speed operations.
High-Speed Applications: With a reference speed of 9,500 r/min and a limiting speed of 11,000 r/min, NJ 2208 bearings, including the Amigo version, are suitable for high-speed applications like pumps, compressors, and spindles. The ability to operate at these speeds ensures reliable performance in dynamic environments.
Durable and Cost-Effective Solutions: The Amigo NJ 2208 offers a high dynamic load rating of 81.5 kN and a static load rating of 75 kN, matching the performance of top brands like SKF and FAG, but at a more competitive price point. This makes the Amigo bearing a cost-effective solution without compromising on performance.
Advantages of Amigo NJ 2208 Bearings Over Other Models
Price-Performance Ratio: Compared to higher-priced brands such as SKF, FAG, and NSK, Amigo NJ 2208 offers similar load ratings, speeds, and durability at a more affordable price. This makes it an excellent choice for budget-conscious buyers who still need reliable performance.
Lightweight Construction: With a weight of 0.5 kg, the Amigo NJ 2208 is lightweight, reducing the overall load on your machinery. This can result in better efficiency and less wear on other machine components compared to heavier alternatives.
Precision Engineering: Amigo bearings are engineered to the same high standards as industry-leading brands, ensuring smooth operation and long service life. They are ideal for applications where minimizing downtime and maintenance is critical.
| Brand/Model | Dynamic Load Rating (kN) | Static Load Rating (kN) | Reference Speed (r/min) | Weight (kg) | Price |
|---|---|---|---|---|---|
| Amigo NJ 2208 | 81.5 | 75 | 9,500 | 0.5 | Competitive |
| SKF NJ 2208 ECP | 81.5 | 75 | 9,500 | 0.55 | Higher |
| FAG NJ 2208-E-XL-TVP2 | 81.5 | 75 | 9,500 | 0.52 | Higher |
| KOYO NJ 2208 R | 81.5 | 75 | 9,500 | 0.5 | Similar |
| NTN NJ 2208 E | 81.5 | 75 | 9,500 | 0.53 | Higher |
| NSK NJ 2208 EM | 81.5 | 75 | 9,500 | 0.51 | Higher |
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Why Amigo NJ 2208 Bearings Are the Top Choice
"I’ve been using the Amigo NJ 2208 bearing for a few months now, and I must say, the performance is impressive. I usually work with SKF bearings, but this one feels just as good in terms of build quality and functionality. It handles high radial loads with ease, and I haven’t noticed any difference in efficiency compared to the SKF model. I’m definitely going to stick with Amigo for my future purchases – great value for money!"
John Simmons
"I was hesitant at first to switch from well-known brands like NSK and SKF, but the Amigo NJ 2208 bearing really surprised me. After installation, the bearing has been running smoothly with no issues whatsoever. It feels just as solid and durable as the more expensive brands I’ve used in the past. The bearing fits perfectly and performs equally well in high-speed applications. For the price, you really can’t beat it!"
Sarah Montgomery
"We decided to give the Amigo NJ 2208 a try in our factory after years of using SKF and FAG bearings. I can honestly say, this bearing holds its own. It’s been used in some heavy-load applications, and it performs just as well as any premium bearing out there. I was initially skeptical about the price difference, but there’s no compromise on quality. Amigo bearings are a great alternative to the usual brands!"
Mark Davis
"The Amigo NJ 2208 has been a game-changer for our maintenance team. We used to rely solely on brands like SKF, but after trying Amigo, we noticed no difference in performance. In fact, it feels just as reliable and durable. The bearings have been in place for months now, and we’ve had zero downtime due to bearing failure. I highly recommend Amigo bearings to anyone looking for high-quality, cost-effective alternatives!"
Emily Chen
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